Results 101 to 110 of about 15,379 (289)

A unifying perspective: the relaxed linear micromorphic continuum

, 2013
We formulate a relaxed linear elastic micromorphic continuum model with symmetric Cauchy force-stresses and curvature contribution depending only on the micro-dislocation tensor.
Ghiba, Ionel-Dumitrel, Madeo, Angela, Neff, Patrizio, Placidi, Luca, Rosi, Giuseppe   +4 more
core   +2 more sources

Understanding and Tuning Mobile Interfaces in Ferroelectric Hf0.5Zr0.5O2 Thin Films in Relation to Microstructure

Advanced Functional Materials, EarlyView.
Ferroelectricity in thin HfO2‐based films offers great possibilities for next‐generation neuromorphic memory devices. There, the response to subcoercive voltage signals is driven by the movement of mobile interfaces and their interaction with crystal defects – a yet rather unexplored aspect, which we shed light on and gain new insights into the complex
Maximilian T. Becker, Yoonsang Park, Kihong Kim, Ji Soo Kim, Nives Strkalj, Atif Jan, Giuliana Di Martino, Benson K. Tsai, Haiyan Wang, Ping Lu, Duk‐Hyun Choe, Judith L. MacManus‐Driscoll   +11 more
wiley   +1 more source

In-situ observation of restoration of tungsten plate via high-temperature confocal laser scanning microscopy

Nuclear Materials and Energy
The restoration of an yttria dispersion strengthened tungsten plate and the corresponding microstructural evolution are investigated through in situ annealing using high-temperature confocal laser scanning microscopy.
Kang Wang, Jiaqin Liu, Xiang Zan, Laima Luo, Yucheng Wu   +4 more
doaj   +1 more source

Computational and theoretical aspects of a grain-boundary model at finite deformations [PDF]

, 2016
A model to describe the role of grain boundaries in the overall response of a polycrystalline material at small length scales subject to finite deformations is presented. Three alternative thermodynamically consistent plastic flow relations on the grain
Gottschalk, D., Javili, A., McBride, A.T., Reddy, B.D., Wriggers, P.   +4 more
core  

Computational and theoretical aspects of a grain-boundary model that accounts for grain misorientation and grain-boundary orientation

, 2015
A detailed theoretical and numerical investigation of the infinitesimal single-crystal gradient plasticity and grain-boundary theory of Gurtin (2008) "A theory of grain boundaries that accounts automatically for grain misorientation and grain-boundary ...
Gottschalk, D., Hirschberger, C. B., Javili, A., McBride, A., Reddy, B. D., Wriggers, P.   +5 more
core   +1 more source

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

Advanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

Analysis of acoustic emission during the melting of embedded indium particles in an aluminum matrix: a study of plastic strain accommodation during phase transformation

, 2012
Acoustic emission is used here to study melting and solidification of embedded indium particles in the size range of 0.2 to 3 um in diameter and to show that dislocation generation occurs in the aluminum matrix to accommodate a 2.5% volume change.
A. Galeski, A. Wolfenden, A.K. Malhotra, A.K. Malhotra, A.K. Malhotra, A.L. Purvis, B. Guérard von, B.I. Voronenko, D.C. Ahn, D.C. Aken Van, David C. Van Aken, F. Kroupa, G.M. Vyletel, I. Gurrappa, J. Tao, J.L. Murray, J.W. Edington, L. Bourgeois, L.E. Murr, M.D. Sangid, M.H. Loretto, M.M. Kuba, Michael M. Kuba, P.C. Clapp, P.M. Mummery, P.S. Dobson, R. Vandervoort, R.Z. Valiev, S.M.C. Bohemen Van, S.M.C. Bohemen Van, S.M.C. Bohemen Van, T.Y. Tan, V.B. Vorontsov, Y. Oshima   +33 more
core   +1 more source

Dense Nanofibrillar Collagen–Silica Hybrids with High Strength and ECM‐Mimetic Tissue Integration

Advanced Functional Materials, EarlyView.
Dense nanofibrillar collagen–silica hybrids are engineered by synchronizing collagen fibrillogenesis with silica condensation, producing printable scaffolds that unexpectedly approach native extracellular matrix organization and strength. These cell‐free constructs guide endogenous cell‐infiltration, enable localized matrix remodeling, and integrate ...
Norein Norein, Shima Tavakoli, Philipp Wolf, Xie Ling, Veronica Rondahl, Klaus Leifer, Gry Hulsart‐Billström, Jöns Hilborn   +7 more
wiley   +1 more source

Modeling plastic deformation of TWIP steel using cohesive zone and crystal plasticity finite element

Materials & Design
In this research, the cohesive zone model-crystal plasticity finite element (CZM-CPFE) method was applied to reveal the influence mechanism of grain boundaries (GBs) and grains on the mechanical properties of fine/ultrafine grained TWIP steels.
Wang Cai, Chaoyang Sun, Hongjia Zhang, Lingyun Qian, Linghui Meng, M.W. Fu   +5 more
doaj   +1 more source

Electro‐Chemo‐Mechanical Coupling in Hf0.5Zr0.5O2 Ferroionic Heterostructures

Advanced Functional Materials, EarlyView.
Schematic of a ferroionic HZO heterostructure where epitaxial interfaces enable dynamic oxygen‐vacancy exchange, coupling ionic and ferroelectric degrees of freedom. Vacancy‐mediated polarization modulation biases HZO polymorphism, suppresses leakage, and enhances piezoelectric response, yielding distinct butterfly‐loop evolution and diode‐like ...
Achilles Bergne, Denis Alikin, Milica Vasiljevic, Victor B. Tinti, Javier Zamudio‐García, Leonardo Soares de Oliveira, Megan Landberg, Dimitrios Koukoulis, Huaiyu Chen, Jesper Wallentin, David Marrero‐López, Astri Bjørnetun Haugen, Sizhao Huang, Dennis Christensen, Nini Pryds, Alexander Tselev, Andrei Kholkin, Vincenzo Esposito   +17 more
wiley   +1 more source